First find a good point in the video (i.e. Tip: when trying to find the delay and adjust it its good to know a few good hot keys (not just the j and k). If you notice that the audio happens first then the video follows, you can fix that by brining the audio forward (forward = positive), so press the k key. Then you can fix it by brining the audio back (back = negative), so press the j button. If you notice that the video happens first then a few split moments later the audio follows. Im working with a video right not is 600ms off sync (the video comes first, so I have to put in -600ms audio delay to line it up) Remember that you change the delay in 50ms increments. Then before changing try to count off in your head the delay time. Watch the way people say things or wait for an audible action (like a light switch being turned on, or somebody dropping something).įirst we find out if the audio is behind or ahead of the video.
#VLC AUDIO SYNCHRONIZATION HOW TO#
How to tell if you need to go negative or positive: The video still is controller by when you play the video (rewind, fastforward, play and pause) You cant control the video still with this option, you only control the audio still. Imagine that the video and audio are on two different stills. So you can go from 0 to +50ms to +100m etc. Pressing k will give you positive audio delay. So you can go from 0 to -50ms to -100ms to -150ms etc. Pressing j will give you more negative audio delay. You can have negative audio delay, or positive audio delay. By default the audio delay option is set to 0 (or off) If that doesn’t work try the audio delay option (which will delay the audio by 50 millisecond increments = 50ms increments). I apologize if this confused anyone.Watching a video and your audio and video are out of sync. [NOTE} I have corrected the placement of two of the images above which may have confused people (OOPS!) and made a slight edit in the instructions for clarity. AVI format, or so I'm told as it's always worked for me so far, however if this fails you, you may want to try here for several other methods. YAAI works to fix most (but apparently not all) audio-video sync problems in videos in.
#VLC AUDIO SYNCHRONIZATION PDF#
You can download this guide in PDF format here for your future reference. I usually just get it close enough to determine what value I will start off with entering in YAAI. Often you have to enter a number instead of using the up/down buttons in VLC Player to get the sync just right.
'down' advances it ahead of the video) while the video is playing.
Tools > Extended Settings > Synchronization, Then click the up or down buttons on the "Advance of audio over video" ('up' moves the audio back. TIP: For videos where the sync problem seems uniformly off from start to finish, I usually use VLC Player to adjust the sync while playing the video to see how far off it is then I actually fix the file with YAAI using the 'delay audio/video' settings using the amount of delay/advance I figured out from VLC player (this saves time by putting you in the right ballpark in YAAI).Īdjusting the audio-video sync with VLC Player v9.4: If the sync is off uniformly throughout the entire movie, you use the delay audio/video settings similarly. When it asks the question: "Do you want to keep the changes?", click Yes. Finally, when it's in sync at the end, close YAAI tool. Once you get used to it and become a better judge of how much of a delay or advance to enter it becomes much easier. I can usually get this perfectly synced in 2 or 3 tries. Click Apply, and check it by sliding the slider on the preview player to the end of the video to see if it got better or worse. If at the end the audio is leading the video click the +0.0001 button a few times to change the framerate (if the audio lags at the end, click the (-) one). If the audio starts out ok but by the end of a video it gets increasingly out of sync (often not even noticeable at all until the very end) what we want to do is slightly change the video framerate in the 'stretch audio' area of YAAI. In other cases the sync is uniformly off from start to finish (and not-so-commonly you will run into a combination of both) Often the video starts out fine but as the video plays it gets further and further out of sync. Small video player will pop up.īasically, there are two types of video-audio sync problems. Find and open the AVI file, and YAAI will open displaying info about your video.Ĥ. Launch YAAI.exe, and "Open avi" dialog will appear.ģ. Download the "YAAI executable" (current ver.
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